It is Liem’s first win in this event. Earlier, he had one defeat and four draws.
Holding the white pawns, Liem beat Dariusz Swiercz of the hosts after 56 moves.
After six matches, Liem has three points. He is now placed only 0.5 points behind the competition’s two leading chess players, including Jeffery Xiong of the US and David Howell of England.
The 2019 Summer Chess Classic, which will last until June 28, is a double round-robin event which contains three groups of six players.
The winner of the tournament will receive prize money of US$12,000.
In the previous version of the tournament, the Spring Chess Classic which was held in March, Liem finished in third place.
